Thank you again tarek2
I highly recommend you first read how the events work before you carry on or you will have many issues like that, which will make you spend hours debugging or changing Events unnecessarily.
In fact I did know how it works and I usually test my event with the keyboard key press trigger. I don't know what I did and why it doesn't worked well last night, I was probably too tired to use my brain correctly!
Anyway, thanks again for your help!